7766672766677 has 6 divisors (see below), whose sum is σ = 8536921305654. Its totient is φ = 7060611605960.

The previous prime is 7766672766653. The next prime is 7766672766679.

7766672766677 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 7707114316561 + 59558450116 = 2776169^2 + 244046^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7766672766677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7766672766679) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32093688998 + ... + 32093689239.

It is an arithmetic number, because the mean of its divisors is an integer number (1422820217609).

Almost surely, 2^{7766672766677} is an apocalyptic number.

It is an amenable number.

7766672766677 is a deficient number, since it is larger than the sum of its proper divisors (770248538977).

7766672766677 is a wasteful number, since it uses less digits than its factorization.

7766672766677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64187378259 (or 64187378248 counting only the distinct ones).

The product of its digits is 10978063488, while the sum is 80.

The spelling of 7766672766677 in words is "seven trillion, seven hundred sixty-six billion, six hundred seventy-two million, seven hundred sixty-six thousand, six hundred seventy-seven".